Automatic sprinkler-head.



E. MoL. LONG. AUTOMATIC SPRINKLER HEAD. APPLICATION nun HAY 8.1914.

1,107,1 98. Patented ug. 11, 1914,

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EUGENE MOLEAN LONG, OF NEW YORK, N. Y.

AUTOMATIC SPRINKLER-HEAD.

LIQTJSS.

Specification of Letters Patent.

Patented Aug. 11, 1914.

Application filed May 8, 1914. Serial No. 837,229.

1 b all whom it may concern Be it known that I, EUGENE MoL. Lone, a citizen of the United States, residing at New York, in the county of New York and State of New York, have invented certain new and useful Improvements in Automatic Sprinkler-Pearls; and I do hereby declare the following to be a full, clear, and exact description of the invention, such as will enable others skilled in the art to which it appertains to make and use the same, reference being had to the accompanying drawings, and t0 the letters and figures of reference marked thereon, which form a part of this specification.

This invention relates to new and useful improvements in sprinkler heads to be used in connection with pipe systemsin buildings and which are normally closed and adapted to be held in position by thermostatically operated mechanism and made operative by fusible metal which holds the parts together.

The invention comprises various details of construction, combinations and arrangements of parts which will be hereinafter fully described, shown in the accompanying drawings and then specifically defined in the appended claim.

I illustrate my invention in the accompanying drawings, in which:

Figure 1 is a side elevation of my improved sprinkler head. Fig. 2 is a central vertical sectional view. Fig. 3 is a section on line 33 of Fig. 1. Fig. 4 is a View of the parts disassembled, and Fig. 5 is a detail view of a slight modification.

Reference now being had to the details of the drawings by letter, A designates a flanged disk having a central opening and circumferentially threaded flange designed to fit a pipe of a sprinkler system, not shown, and supporting arms, designated by letter 13, project from said flange at points diametrically opposite and have their upper ends bent at right angles forming horizontally disposed widened portions C which are fastened to the under surface of the deflecting cap D which has its edge serrated as at D. The under surface of each of the widened portions C is provided with transverse grooves O in alinement with each other. A stopper or closure, designated by letter E, is adapted to normally fit over and close the opening in said disk and is provided with an adjusting screw F, mounted in a threaded aperture therein and the inner end of which adjusting screw is tapering to a point. A U-shaped member, designated by letter H, has an indenture H adapted to engage the upper tapering end of said set screw and the upper end of each arm of said member has a shoulder N, each of which is slightly inclined, and O designates a plate which has its lower end concaved and is adapted to engage the two arms of the U-shaped member at one end of the plate, which is substantially T-shaped in elevation, has laterally projecting portions 0 with inclined shoulders 0 upon the under edges thereof which are adapted to engage the shoulders at the end of the U-shaped member, being adapted to fulcrum thereon when the plate is adjusted in place. Projecting from the upper end of the member 0 are lugs P which are tapering and are adapted to engage the grooves G formed in the under surfaces of the horizontal projections G at the upper end of the arms B. A locking plate, designated by letter S, is bent at angles at S and its extreme end is bent at an angle at S adapted to engage over the lower portion of said U-shaped member, while the face of the plate S is adapted to be held to the face of the plate 0 by means of a fusible solder X. A wire W, bent at an angle, is passed through a hole Y formed in the plate 0 and engages the plate S and in conjunction with the fusible material serves to hold the parts securely together.

In adjusting the parts together, the closure is placed over the opening in the disk, the set screw first having been adjusted to proper position. The U-shaped member is placed with the indenture thereof over the point of the adjusting screw, the shoulders upon the member 0 fulcrumed over the shoulders upon said member and the hooks upon the plate made to engage the grooves formed in the under surfaces of the lateral projections C. The shank portion of the plate and U-shaped member are then swung together which will cause a pressure upon the stopper to hold the same tightly against the under surface of the disk, thereby normally shutting of]. the water. As the faces of the plates come in contact with each other, they may be temporarily held together by said wire and afterward solder, adapted to fuse at a comparatively low degree of heat, is applied to and adapted to hold the plates together. The parts being thus separated, the apparatus is ready for emergency use and, whenever a system equipped with sprinklers made as shown and described is subjected to a sufficient degree of heatto cause the solder to melt, the parts will be disconnected, the pressure holding the same causing the latter to spring apart and allow the closure to be thrown off its seat about the aperture in said disk and allowing the water to escape and which, com ing in contact with the disk of a deflector, will cause to be spread in difi'erent directions.

In Fig. 5 of the drawings, I have shown a slight modification in which a double angled metal strip is used to secure the parts S and 0 together.

lVhat I claim to be new is A sprinkler head comprising an apertured disk designed. to be fastened to a water main system and provided with upwardly projecting supporting arms whichare bent laterally and grooved upon their under faces, a spreader upon said arms, a closure for the aperture of the disk, an adjusting screw carr'ied by the closure, a U-shaped member having an indenture formed in the lower portion thereof adapted to engage the point of said adjusting screw, the ends provided with grooves, plates held together by a fusible metal, the shank portion of one plate terminating at one end in laterally projecting portions which are curved and adapted to engage the opposite arms of said U- shaped member, shoulders near the opposite end of the plate which are inclined and adapted to fulcrum upon the inclined grooves upon the ends of the U-shaped member, one end of the shouldered plate provided with projecting lugs and adapted to engage the grooves in the laterally projecting portions of said supporting arms.

In testimony whereof I hereunto ailix my signature in presence of two witnesses.

EUGENE MGLEAN LONG.

Witnesses MAX L. REBEN, JOHN M. BAFFINGTON.

Copies of this patent may be obtained for five cents each, by addressing the Commissioner of Patents,

Washington, D. C. 

